rwarbelow · December 19, 2015 07:28 · Jul 6, 2013 · Jun 25, 2013 · Jun 11, 2013
diff --git a/P5: OO Inheritance.rb b/P5: OO Inheritance.rb
@@ -1,3 +1,5 @@
+### PART 1 (write tests)
+
 class Car
  @@WHEELS = 4
  def initialize(args)
@@ -40,24 +42,20 @@ def stop_requested?
  def needs_gas?
    return [true,true,true,false].sample
  end
-
-
 end
-
-
+ 
+ 
 class Motorbike
  @@WHEELS = 2
  def initialize(args)
    @color = args[:color]
    @wheels = @@WHEELS
-
  end
-
  def drive
    @status = :driving
    @speed = :fast
  end
-
+ 
  def brake
    @status = :stopped 
  end
@@ -67,4 +65,157 @@ def needs_gas?
  def weave_through_traffic
    @status = :driving_like_a_crazy_person
  end
-end
+end
+
+car = Car.new({:color => "red"})
+p car.drive == :driving
+p car.brake == :stopped
+p car.needs_gas? == true
+
+bus = Bus.new({:color => "blue", :wheels => 6, :num_seats => 25, :fare => 3})
+p bus.drive
+p bus.admit_passenger("rachel", 5) == ["rachel"]
+p bus.admit_passenger("caitlin", 4) == ["rachel", "caitlin"]
+p bus.brake == :stopped
+p bus.stop_requested?
+p bus.needs_gas?
+
+motorbike = Motorbike.new({:color => "black"})
+p motorbike.drive == :fast
+p motorbike.brake == :stopped
+p motorbike.needs_gas?
+p motorbike.weave_through_traffic == :driving_like_a_crazy_person
+
+
+
+### PART 2 (refactoring with inheritance) and PART 3 (get creative)
+
+class Vehicle
+  attr_reader :status, :color, :speed
+  def initialize(args)
+    @color = args[:color]
+    @status = :stopped
+    @speed = 0
+  end
+  def drive
+    @status = :driving
+    accelerate
+  end
+  def brake
+    @status = :stopped
+    @speed = 0
+  end
+  def needs_gas?
+    return [true, true, true, false].sample
+  end
+  def accelerate
+    @speed += 10
+  end
+  def decelerate
+    if @speed == 0
+      "The bus cannot decelerate because it is already stopped!"
+    else
+      @speed -= 10
+    end
+  end
+end
+
+class Car < Vehicle
+  attr_reader :wheels
+  @@WHEELS = 4
+  def initialize(args)
+    super(args)
+    @wheels = @@WHEELS
+  end
+end
+
+class Bus < Vehicle
+  attr_reader :fare, :num_seats, :passengers, :wheels
+  def initialize(args)
+    super(args)
+    @wheels = args[:wheels]
+    @fare = args[:fare]
+    @num_seats = args[:num_seats]
+    @passengers = []
+  end
+  def stop_requested?
+    return [true, false].sample
+  end
+  def drive
+    return self.brake if stop_requested?
+    @status = :driving
+    self.accelerate
+  end
+  def admit_passenger(passenger, money_paid)
+    if money_paid < fare
+      puts "You do not have enough money to get on the bus. Sorry!"
+    elsif passengers.size >= num_seats
+      puts "The bus is too full. We cannot admit another passenger. Sorry!"
+    else
+      passengers << passenger
+      puts "Welcome aboard, #{passenger}!"
+    end
+  end
+end
+
+
+class Motorbike < Vehicle
+  attr_reader :wheels
+  @@WHEELS = 2
+  def initialize(args)
+    super(args)
+    @wheels = @@WHEELS
+  end
+  def weave_through_traffic
+    status = :driving_like_a_crazy_person
+  end
+end
+
+
+motorbike = Motorbike.new({:color => "red"})
+p motorbike.wheels == 2
+p motorbike.speed == 0
+p motorbike.drive == 10
+p motorbike.speed == 10
+p motorbike.drive == 20
+p motorbike.weave_through_traffic == :driving_like_a_crazy_person
+p motorbike.status == :driving
+p motorbike.decelerate == 10
+p motorbike.speed == 10
+p motorbike.brake == 0
+p motorbike.status == :stopped
+p motorbike.needs_gas?
+
+
+bus = Bus.new({:color => "blue", :wheels => 6, :num_seats => 25, :fare => 3})
+p bus.wheels == 6
+p bus.speed == 0
+p bus.stop_requested?
+bus.admit_passenger("rachel", 5) == "Welcome aboard, rachel!"
+bus.admit_passenger("caitlin", 5) == "Welcome aboard, caitlin!"
+p bus.admit_passenger("kylin", 2) == "You do not have enough money to get on the bus. Sorry!"
+p bus.decelerate
+p bus.brake == 0
+p bus.status == :stopped
+p bus.needs_gas?
+
+
+car = Car.new({:color => "red"})
+p car.wheels == 4
+p car.speed == 0
+p car.drive == 10
+p car.speed == 10
+p car.drive == 20
+p car.drive == 30
+p car.status == :driving
+p car.decelerate == 20
+p car.brake == 0
+p car.status == :stopped
+p car.needs_gas?
+
+
+
+
+
+
+
diff --git a/vehicle.rb → P5: OO Inheritance.rb b/vehicle.rb → P5: OO Inheritance.rb
diff --git a/vehicle.rb b/vehicle.rb
@@ -0,0 +1,70 @@
+class Car
+ @@WHEELS = 4
+ def initialize(args)
+   @color = args[:color]
+   @wheels = @@WHEELS
+ end
+ def drive
+   @status = :driving
+ end
+ def brake
+   @status = :stopped    
+ end
+ def needs_gas?
+   return [true,true,false].sample
+ end
+
+end
+class Bus
+ attr_reader :passengers
+ def initialize(args)
+   @color = args[:color]
+   @wheels = args[:wheels]
+   @num_seats = args[:num_seats]
+   @fare = args[:fare]
+   @passengers=[]
+ end
+ def drive
+   return self.brake if stop_requested?
+   @status = :driving
+ end
+ def admit_passenger(passenger,money)
+   @passengers << passenger if money > @fare
+ end
+ def brake
+   @status = :stopped
+ end 
+ def stop_requested?
+   return [true,false].sample
+ end
+ def needs_gas?
+   return [true,true,true,false].sample
+ end
+
+
+end
+
+
+class Motorbike
+ @@WHEELS = 2
+ def initialize(args)
+   @color = args[:color]
+   @wheels = @@WHEELS
+
+ end
+
+ def drive
+   @status = :driving
+   @speed = :fast
+ end
+
+ def brake
+   @status = :stopped 
+ end
+ def needs_gas?
+   return [true,false,false,false].sample
+ end 
+ def weave_through_traffic
+   @status = :driving_like_a_crazy_person
+ end
+end
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